Disk recording/reproducing apparatus and disk recording/reproducing method

Abstract

PCT No. PCT/JP88/00253 Sec. 371 Date Nov. 9, 1988 Sec. 102(e) Date Nov. 9, 1988 PCT Filed Mar. 10, 1988 PCT Pub. No. WO88/07254 PCT Pub. Date Sep. 22, 1988.A disk recording/reproducing apparatus and a disk recording/reproducing method wherein a recording disk (1) having an absolute address is provided with a program region (6) and a read-in region (7), data such as play data are recorded on the program region (6), the data are recorded on the read-in region (7) using, as catalog data, a start address data of a data unit region where the data have been recorded and a finish address data, and the data on the program region (6) are reproduced from the catalog data in the read-in region (7). An erase inhibit flag is set to the catalog data for each of the data units, whereby the erase inhibit and the erase enable are designated by the erase inhibit flag for each of the data units for the data that are recorded on the program region (6).

What is claimed is: 
     
       1. A disk recovering/reproducing apparatus in which a program region and a lead-in region are provided on a recording disk to which absolute addresses are imparted in advance, data such as play information are recorded in the program region, start address data and end address data of each unit information region in the program region having data recorded therein are recorded as catalog data in the lead-in region and in which recording and/or reproduction in or from the program region is performed on the basis of the catalog data in the lead-in region, wherein the improvement resides in that it comprises erasure inhibit control means for performing inhibit control of an erasure operation for data previously recorded in the program region on the recording disk, in that an erasure inhibit flag is provided on an information unit basis in the catalog data and in that an erasure inhibit control for data previously recorded in the program region on the recording disk is performed on an information unit basis by the erasure inhibit control means in response to the erasure inhibit flag. 
     
     
       2. The disk recording/reproducing apparatus according to claim 1 comprising memory means for storing the catalog information reproduced from the lead-in region of the recording disk, operating input means for switching the state of the erasure inhibit flag for an information unit of the catalog information in the memory means as the information unit is reproduced during reproduction of the program region on the recording disk, and catalog information rewriting means for re-recording the catalog information stored in the memory means in the lead-in region. 
     
     
       3. The disk recording/reproducing apparatus according to claim 1 wherein the erasure inhibit control means terminates the recording operation directly before the erasure inhibit region in the program region is reached during recording on the program region on the recording disk on the basis of the erasure inhibit flag for each information unit contained in the catalog information stored in the memory means. 
     
     
       4. The disk recording/reproducing apparatus according to claim 2 comprising display means for making a display indicating the approaching erasure inhibit region of the program region during recording on the program region on the recording disk on the basis of the erasure inhibit flag for each information unit contained in the catalog information stored in the memory means. 
     
     
       5. The disk recording/reproducing apparatus according to claim 4 comprising operating input means for cancelling the erasure inhibit of the information unit recorded in the erasure inhibit region of the program displayed by the display means during recording in the program region on the recording disk. 
     
     
       6. The disk recording/reproducing method in which a program region and a lead-in region are provided on a recordable disk to which absolute addresses are imparted in advance, data such as play information are recorded in the program region, start address data and end address data of a unit information region in the program region having data recorded therein are recorded as catalog data in the lead-in region and in which recording and/or reproduction in or from the program region is performed on the basis of the catalog data in the lead-in region, wherein the improvement resides in that it comprises setting an erasure inhibit flag for each data unit of data recorded in the program region on the recording disk as the catalog data, and performing erasure inhibit control for each information unit of data previously recorded in the program region in response to the erasure inhibit flag on the basis of the catalog data reproduced from the lead-in region on the recording disk. 
     
     
       7. The disk recording/reproducing method according to claim 6 wherein the catalog information reproduced from the lead-in region on the recording disk is stored and, when an operating input is received during reproduction of the program region of the recording disk, the catalog information in which the status of the erasure inhibit flag for the information unit being reproduced has been switched is re-recorded in the lead-in region. 
     
     
       8. The disk recording/reproducing method according to claim 7 wherein the recording operation is controlled on the basis of the erasure inhibit flag for each information unit contained in the catalog information reproduced from the lead-in region on the recording disk so that the recording operation is terminated directly before the erasure inhibit region of the program region is reached during recording in the program region on the recording disk. 
     
     
       9. The disk recording/reproducing method according to claim 8 wherein, when an operating input is received during recording in the program region on the recording disk, erasure inhibition of the information unit in the program region is cancelled to permit the recording operation to be continued.